This chunk should produce a plot:

plot(cars)

This chunk should produce console output, but no plots:

library(DescTools)
Desc(cars)
## ------------------------------------------------------------------------- 
## Describe cars (data.frame):
## 
## data.frame:  50 obs. of  2 variables
## 
##   Nr  ColName  Class    NAs  Levels
##   1   speed    numeric  .          
##   2   dist     numeric  .          
## 
## 
## ------------------------------------------------------------------------- 
## 1 - speed (numeric)
## 
##   length       n    NAs  unique     0s   mean  meanCI
##       50      50      0      19      0  15.40   13.90
##           100.0%   0.0%           0.0%          16.90
##                                                      
##      .05     .10    .25  median    .75    .90     .95
##     7.00    8.90  12.00   15.00  19.00  23.10   24.00
##                                                      
##    range      sd  vcoef     mad    IQR   skew    kurt
##    21.00    5.29   0.34    5.93   7.00  -0.11   -0.67
##                                                      
## lowest : 4.0 (2), 7.0 (2), 8.0, 9.0, 10.0 (3)
## highest: 20.0 (5), 22.0, 23.0, 24.0 (4), 25.0
## ------------------------------------------------------------------------- 
## 2 - dist (numeric)
## 
##   length       n    NAs  unique     0s   mean  meanCI
##       50      50      0      35      0  42.98   35.66
##           100.0%   0.0%           0.0%          50.30
##                                                      
##      .05     .10    .25  median    .75    .90     .95
##    10.00   15.80  26.00   36.00  56.00  80.40   88.85
##                                                      
##    range      sd  vcoef     mad    IQR   skew    kurt
##   118.00   25.77   0.60   23.72  30.00   0.76    0.12
##                                                      
## lowest : 2.0, 4.0, 10.0 (2), 14.0, 16.0
## highest: 84.0, 85.0, 92.0, 93.0, 120.0